An old military tank is stolen, and Bradford Devlin, a war hero now on death row, believes he knows who did it. He contacts Daily Sentinel owner Britt Reid to tell him his old tank crew likely swiped the vehicle in order to spring him from jail. Reid believes Devlin is innocent and knows that an attempted jailbreak will ruin any chance for a pardon. He sets out as the Green Hornet to track down Devlin's old war crew and proposes a deal - Devlin in exchange for the vehicle. But when the crooks figure he is bluffing about Devlin, the Green Hornet and Kato are forced into a fight with the tank.